This is indeed true that the Investa team is active in their Telegram group like many other projects.

I fully understand you as a Bitcointalk member and asked Investa team to comment in this thread and even they did a couple of times but as you can see this thread caught not much attention from the community, even during the ICO stage and only because I keep updating it is still not closed. To be honest, when I spoke last time with Investa they told me that Bitcointalk thread is not so important for them because of the reasons mentioned above, but of course, they are happy that I keep it alive.

At the beginning of the crypto boom, the first place to introduce new ICO was exactly the Bitcointalk forum and all projects started from the ANN thread here and later advertised using bounty and rewards, but at the end of 2017, everything changed when ICO services started to compete with Bitcointalk. Many scammy projects, which don't want to be tagged as a scam haven't started their ANN threads here and what is even worse many good projects did the same because of FUD and fake accounts that spread false accusations and tried to ruin their reputation on purpose.

It is hard to say but Bitcointalk lost the opportunity and today many projects don't have their thread on this forum, only use other social media channels to communicate and I can understand that because these tools and made exactly for such a purpose and Bitcointalk forum not. They can moderate their channels and have full control of everything, so it is obvious that everything migrated there. Especially when here on Bitcointalk nobody made any effort to stop them here. Additionally, because this is a BTC forum, altcoins and especially Altcoins Announcements board is not liked so much and treated as a spammy section.

But no worries, I am here   to answer your questions and if you need contact with the team just use their official Telegram channel: https://t.me/investaco.